karma.conf.js

// Karma configuration file, see link for more information
// https://karma-runner.github.io/0.13/config/configuration-file.html

module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['jasmine', '@angular/cli'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage-istanbul-reporter'),
      require('@angular/cli/plugins/karma')
    ],
    client: {
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    files: [
      { pattern: './node_modules/@angular/material/prebuilt-themes/indigo-pink.css', watched: false },
    ],
    coverageIstanbulReporter: {
      reports: [ 'html', 'lcovonly', 'json', 'text-summary' ],
      fixWebpackSourcePaths: true
    },
    angularCli: {
      environment: 'dev'
    },
    reporters: ['progress', 'kjhtml'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    // Detect CI env here, run in headless Chrome when in CI
    browsers: [ config.angularCli && config.angularCli.codeCoverage ? 'ChromeHeadless' : 'Chrome' ],
    concurrency: Infinity,
    singleRun: false
  });
};